Part A Which change is a chemical change? The formation of fog The smoothening of rocks by ocean waves Nonest fire of the above Submit Request Answer

A chemical change involves a transformation that alters the chemical composition of a substance. Among the options provided: 1. The formation of fog - This is a physical change, as it involves the condensation of water vapor into tiny droplets without changing the chemical composition of the water. 2. The smoothening of rocks by ocean waves - This is also a physical change, as it involves the physical alteration of the rocks' surface without changing their chemical composition. 3. None of the above - This option suggests that none of the listed changes are chemical changes. Since none of the options describe a chemical change, the correct answer is "None of the above."